30"W X 18"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 31.875"W X 19.875"H] 12" Round Duct Pipe Heavy-Duty Construction: Powder-coated finish prevents

Heavy-Duty Construction: Powder-coated finish prevents rust

Design – Re-configurable/Interchangeable Sections – Easily convertible into 1-Way

Center Core is Removable for Easy Access and Maintence

+ Product Details Size - 10"w X 4"h is the size for the duct opening measurement only

+ Product Details Size - 14"w X 6"h is the size for the duct opening measurement only

30"W X 18"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 31.875"W X 19.875"H] 12" Round Duct Pipe Heavy-Duty Construction: Powder-coated finish prevents+ Product Details Size 30"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 31. 875" width X 19. 875" height. High Quality High quality aluminum with counter sunk screw holes (screws included) and no sharp edges. Design Unrestricted airflow For Your HVAC system noise free components no vibrating louvers etc. Powder Coat Finish Smooth, shiny, scratch resistant, beautiful. Looks like it was